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Title:Colorimetric cutoff indication of relative humidity based on selectively functionalized mesoporous silica
Authors:ID Švara Fabjan, Erika (Author)
ID Nadrah, Peter (Author)
ID Ajdovec, Anja (Author)
ID Tomšič, Matija (Author)
ID Dražić, Goran (Author)
ID Mazaj, Matjaž (Author)
ID Zabukovec Logar, Nataša (Author)
ID Sever Škapin, Andrijana (Author)
Files:URL URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S0925400520304883?via%3Dihub
Description: Open access
 
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Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo ZAG - Slovenian National Building and Civil Engineering Institute
Abstract:We present a novel % cutoff concept of colorimetric indication of relative humidity based on dye dissolution in condensed water in capillaries of selectively functionalized mesoporours host SiO2 material. Consistently high levels of indoor air humidity induces mold and algae growth which represent a potential risks for human health and have deteriorating effect on walls as well. Simple localized humidity detection of high humidity with naked eye especially at places with low air circulation, where growth of mold usually starts first, is therefore highly desirable. The reporting dye was integrated in the non-functionalized mesoporous silica matrix with different pore diameters and selective-functionalized mesoporous silica material. After exposure to the environment of different air humidities the dye dissolved in water causing color change of adsorbent. With the use of adsorbents with different mesopore diameters high ability to tune the value of relative humidity when complete capillary condensation occurred was achieved. Materials with pore diameters of 3.0%nm, 3.5%nm and 7.0%nm exhibit gradual color change when reaching relative humidity up to 55, 79 and 88 RH% respectively. After selective methylation of the material with 7.0%nm pore diameter, non-gradual cutoff color change was achieved. Sample exhibited color change at narrow range of relative humidity (cutoff color change). Due to selective functionalized outer surface the dye dissolution occur only in condensed water in pores and therefore provide colorimetric indication only in this range. Selectively modified silica material has a great potential for a straightforward detection of high humid environment.
Keywords:turn-on colorimetric probe, selective functionalization, mesoporous silica, relative humidity, capillary condensation
Publication status:Published
Publication version:Version of Record
Publication date:19.04.2020
Publisher:Elsevier B.V.
Year of publishing:2020
Number of pages:str. 1-11
Numbering:Vol. 316
PID:20.500.12556/DiRROS-16904 New window
UDC:620.1/.2
ISSN on article:0925-4005
DOI:10.1016/j.snb.2020.128138 New window
COBISS.SI-ID:2570599 New window
Copyright:© 2020 The Author(s). Published by Elsevier B.V.
Note:Dostopen na spletu: 19 April 2020, 128138; Št. članka: 128138;
Publication date in DiRROS:05.09.2023
Views:888
Downloads:657
Metadata:XML DC-XML DC-RDF
:
ŠVARA FABJAN, Erika, NADRAH, Peter, AJDOVEC, Anja, TOMŠIČ, Matija, DRAŽIĆ, Goran, MAZAJ, Matjaž, ZABUKOVEC LOGAR, Nataša and SEVER ŠKAPIN, Andrijana, 2020, Colorimetric cutoff indication of relative humidity based on selectively functionalized mesoporous silica. Sensors and actuators. Chemical [online]. 2020. Vol. 316, p. 1–11. [Accessed 20 April 2025]. DOI 10.1016/j.snb.2020.128138. Retrieved from: https://dirros.openscience.si/IzpisGradiva.php?lang=eng&id=16904
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Record is a part of a journal

Title:Sensors and actuators. Chemical
Shortened title:Sens. actuators, B, Chem.
Publisher:Elsevier Sequoia
ISSN:0925-4005
COBISS.SI-ID:361794 New window

Document is financed by a project

Funder:ARRS - Slovenian Research Agency
Project number:Z1-8149
Name:Kolorimetrično določanje relativne vlažnosti na osnovi mezoporoznih SiO2 delcev
Funder:ARRS - Slovenian Research Agency
Project number:P2-0273
Name:Gradbeni objekti in materiali
Funder:ARRS - Slovenian Research Agency
Project number:P1-0201
Name:Fizikalna kemija
Funder:ARRS - Slovenian Research Agency
Project number:P1-0021
Name:Nanoporozni materiali
Funder:ARRS - Slovenian Research Agency
Project number:P2-0393
Name:Napredni materiali za nizkoogljično in trajnostno družbo

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:17.04.2020
Applies to:Text and Data Mining valid from 2020-08-01 Version of Record valid from 2020-04-17

Secondary language

Language:Slovenian
Keywords:kolorimetrični sistem za indikacijo, selektivna funkcionalizacija, mezoporozen silicijev dioksid, relativna vlažnost, kapilarna kondenzacija


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